Being size tiny, Pixies require some interesting work regarding gear. I would instead expect to see Saurians as the summer or fall seasonal race this year.

Witch Doctors would go to Orcs, Artificers would go to Goblins. Artificers are probably more interesting for me to finish at this point. I may tap a few folks to beta test them at low levels for me, so don't be surprised if you see some odd folk running around in-game.

I would fix bugs before writing new edges.

I've never been a fan of custom class/race combos. Maybe Twist can be bribed.